Mushroom bubble machine



FIG. 1 is a first top perspective view of the mushroom bubble machine embodying our new design;

FIG. 2 is a second top perspective view thereof;

FIG. 3 is a bottom perspective view thereof;

FIG. 4 is an elevation view thereof;

FIG. 5 is an elevation view of the opposing side of FIG. 4;

FIG. 6 is an elevation view at 135° clockwise rotation from FIG. 4;

FIG. 7 is an elevation view at 270° clockwise rotation from FIG. 4;

FIG. 8 is an elevation view of the opposing side of FIG. 7;

FIG. 9 is a top plan view thereof; and,

FIG. 10 is a bottom plan view thereof.

The broken lines represent portions of the mushroom bubble machine that form no part of the claimed design. 

CLAIM The ornamental design for a mushroom bubble machine, as shown and described. 